It may feel like the other person is withdrawing or fading away. Or the relationship just isn't how it was.
This is Spirit, The Divine, The Creator, The Universe and so forth telling you that you are no longer at the same frequency as before. You are evolving. You are vibrating at a much higher rate that the other person can't follow or keep up and its time to let them go as someone better is coming.
This is a tough pill to swallow for many. They want this to work out. They try different things. Even lowering their self worth and vibration just to be with them. But Spirit keeps putting things in the path to show them that the person they are trying to be with is not meant for them.
They are dimming your own light. They are making you settle for less when you deserve better and higher quality connections.
This person could also be a soul lesson for you to learn to let go. That you can't change them or yourself. That you must learn the art of surrender.
What will be will be.
It is a sad and harsh lesson that we must learn. But know it's going to get better in time. Better connections that fit your soul at your vibration.
Good luck!
Blessings!